I need advice, i have an 05, 3500, 4x4, 6spd, srw. my trouble started at 105000 mi. i started to have a noise that went wer,wer,wer,wer as i accelerated in 1st and 2nd. if i let up on the accelerator and just maintained speed the wer,wer,wer would subside. i now have 120000 on the truck and the...